@cornerstonejs/dicom-image-loader
Version:
Cornerstone Image Loader for DICOM WADO-URI and WADO-RS and Local file
83 lines (82 loc) • 3.47 kB
JavaScript
import isNMReconstructable from '../../isNMReconstructable';
import getNumberValues from './getNumberValues';
function getImageTypeSubItemFromDataset(dataSet, index) {
const imageType = dataSet.string('x00080008');
if (imageType) {
const subTypes = imageType.split('\\');
if (subTypes.length > index) {
return subTypes[index];
}
}
return undefined;
}
function extractOrientationFromNMMultiframeDataset(dataSet) {
let imageOrientationPatient;
const modality = dataSet.string('x00080060');
if (modality?.includes('NM')) {
const imageSubType = getImageTypeSubItemFromDataset(dataSet, 2);
if (imageSubType && isNMReconstructable(imageSubType)) {
if (dataSet.elements.x00540022) {
imageOrientationPatient = getNumberValues(dataSet.elements.x00540022.items[0].dataSet, 'x00200037', 6);
}
}
}
return imageOrientationPatient;
}
function extractPositionFromNMMultiframeDataset(dataSet) {
let imagePositionPatient;
const modality = dataSet.string('x00080060');
if (modality?.includes('NM')) {
const imageSubType = getImageTypeSubItemFromDataset(dataSet, 2);
if (imageSubType && isNMReconstructable(imageSubType)) {
if (dataSet.elements.x00540022) {
imagePositionPatient = getNumberValues(dataSet.elements.x00540022.items[0].dataSet, 'x00200032', 3);
}
}
}
return imagePositionPatient;
}
function extractOrientationFromDataset(dataSet) {
let imageOrientationPatient = getNumberValues(dataSet, 'x00200037', 6);
if (!imageOrientationPatient &&
dataSet.elements.x00209116?.items?.[0]?.dataSet) {
imageOrientationPatient = getNumberValues(dataSet.elements.x00209116.items[0].dataSet, 'x00200037', 6);
}
if (!imageOrientationPatient) {
imageOrientationPatient =
extractOrientationFromNMMultiframeDataset(dataSet);
}
return imageOrientationPatient;
}
function extractPositionFromDataset(dataSet) {
let imagePositionPatient = getNumberValues(dataSet, 'x00200032', 3);
if (!imagePositionPatient &&
dataSet.elements.x00209113?.items?.[0]?.dataSet) {
imagePositionPatient = getNumberValues(dataSet.elements.x00209113.items[0].dataSet, 'x00200032', 3);
}
if (!imagePositionPatient) {
imagePositionPatient = extractPositionFromNMMultiframeDataset(dataSet);
}
return imagePositionPatient;
}
function extractSpacingFromDataset(dataSet) {
let pixelSpacing = getNumberValues(dataSet, 'x00280030', 2);
if (!pixelSpacing && dataSet.elements.x00289110?.items?.[0]?.dataSet) {
pixelSpacing = getNumberValues(dataSet.elements.x00289110.items[0].dataSet, 'x00280030', 2);
}
return pixelSpacing;
}
function extractSliceThicknessFromDataset(dataSet) {
let sliceThickness;
if (dataSet.elements.x00180050) {
sliceThickness = dataSet.floatString('x00180050');
}
else if (dataSet.elements.x00289110 &&
dataSet.elements.x00289110.items.length &&
dataSet.elements.x00289110.items[0].dataSet.elements.x00180050) {
sliceThickness =
dataSet.elements.x00289110.items[0].dataSet.floatString('x00180050');
}
return sliceThickness;
}
export { extractOrientationFromDataset, extractPositionFromDataset, extractSliceThicknessFromDataset, extractSpacingFromDataset, getImageTypeSubItemFromDataset, };